MEDIUM
IPv6 fragments bypass in nf_conntrack netfilter code
Published Mar 16, 2007
5.0
MEDIUMCVSS 2.0
EPSS 3.02%
Description
nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IP_CT_ESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments.
Affected products
No data.
- ≤ 2.6.20.2
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-8.1.4.el5
Fixed · RHSA-2007:0347
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-8.1.4.el5 | Fixed | RHSA-2007:0347 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.02% 0.03017
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03017
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.02% (0.03017) | 86.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.02% (0.03017) | 85.66th | v5 (v2026.06.15) |
| Mar 29, 2025 | 2.21% (0.02205) | 74.01th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.96% (0.00963) | 74.97th | v4 (v2025.03.14) |
| Feb 3, 2025 | 12.04% (0.12036) | 95.38th | v3 (v2023.03.01) |
| Dec 17, 2024 | 10.94% (0.10935) | 95.09th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.43% (0.02427) | 90.36th | v3 (v2023.03.01) |
| Jun 19, 2024 | 2.38% (0.02375) | 89.91th | v3 (v2023.03.01) |
| May 11, 2024 | 2.06% (0.02061) | 88.96th | v3 (v2023.03.01) |
| Apr 3, 2024 | 2.49% (0.02488) | 89.86th | v3 (v2023.03.01) |
| Feb 25, 2024 | 2.87% (0.02867) | 90.42th | v3 (v2023.03.01) |
| Jan 18, 2024 | 0.80% (0.00804) | 79.84th | v3 (v2023.03.01) |
| Dec 11, 2023 | 0.50% (0.00499) | 73.60th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.87% (0.00869) | 80.57th | v3 (v2023.03.01) |
| Aug 18, 2023 | 0.64% (0.00642) | 76.58th | v3 (v2023.03.01) |
| Jul 11, 2023 | 0.55% (0.00554) | 74.50th | v3 (v2023.03.01) |
| Jun 5, 2023 | 0.60% (0.00602) | 75.41th | v3 (v2023.03.01) |
| Mar 22, 2023 | 0.59% (0.00591) | 74.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00546) | 73.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (21)
- http://secunia.com/advisories/24492 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/25228 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25288 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25392 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25961 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/26620 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2007/dsa-1289 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.3 x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:171 vendor-advisoryx_refsource_MANDRIVA
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:196 vendor-advisoryx_refsource_MANDRIVA
- http://www.novell.com/linux/security/advisories/2007_43_kernel.html vendor-advisoryx_refsource_SUSE
- http://www.osvdb.org/33028 vdb-entryx_refsource_OSVDB
- http://www.redhat.com/support/errata/RHSA-2007-0347.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/23976 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-464-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2007/0944 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2007-1497 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=238947 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2007-1497
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10457 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2007-1497
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 16, 2007
Updated Aug 7, 2024
Reserved Mar 16, 2007
Link CVE-2007-1497
CISA Vulnrichment
Updated n/a